Genome-wide mapping of HATs and HDACs reveals distinct functions in active and inactive genes.
Genome-wide mapping of HATs and HDACs reveals distinct functions in active and inactive genes.
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DOI:
10.1016/j.cell.2009.06.049
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发表时间:
2009-09-04
期刊:
影响因子:
64.5
通讯作者:
Zhao K
中科院分区:
文献类型:
--
作者:
Wang Z;Zang C;Cui K;Schones DE;Barski A;Peng W;Zhao K
Histone acetyltransferases (HATs) and histone deacetylases (HDACs) function antagonistically to control histone acetylation states that are crucial to many cellular processes. We describe here genome-wide mapping experiments that reveal that both HATs (CBP, p300, PCAF, Tip60, MOF) and HDACs (HDAC1, HDAC2, HDAC3, HDAC6) on chromatin are positively correlated with gene expression and histone acetylation. We provide evidence that Tip60 and HDAC6 are targeted to transcribed regions of active genes by phosphorylated RNA Pol II. Our results indicate that MLL-mediated H3K4 methylation primes chromatin to facilitate histone acetylation. Our data suggest that the majority of HDACs in the human genome function to reset chromatin by removing acetylation in active genes; the dynamic cycle of acetylation and deacetylation by transient HAT/HDAC binding prevents Pol II from binding to the genes primed by H3K4 methylation and poises them for future activation.
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